/*
 * Copyright 2013 Sigurd Randoll <srandoll@digiway.de>.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package de.digiway.rapidbreeze.server.infrastructure.persistence;

import de.digiway.rapidbreeze.server.infrastructure.objectstorage.ObjectStorage;
import de.digiway.rapidbreeze.server.model.storage.StorageProvider;
import de.digiway.rapidbreeze.server.model.storage.StorageProviderRepository;
import de.digiway.rapidbreeze.server.model.storage.StorageProviderDownloadClient;
import java.net.URL;
import java.util.List;

/**
 *
 * @author Sigurd Randoll <srandoll@digiway.de>
 */
public class StorageProviderRepositoryStorage implements StorageProviderRepository {

    private ObjectStorage objectStorage;

    public StorageProviderRepositoryStorage(ObjectStorage objectStorage) {
        this.objectStorage = objectStorage;
    }

    @Override
    public StorageProvider registerProvider(String name, Class<? extends StorageProviderDownloadClient> storageProviderDownloadClientClass) {
        for (StorageProvider storageProvider : getStorageProviders()) {
            if (storageProvider.getName().equals(name)) {
                throw new IllegalArgumentException("The given name is already registered by another " + StorageProvider.class.getSimpleName() + ".");
            }
        }

        StorageProvider storageProvider = new StorageProvider(name, storageProviderDownloadClientClass.getCanonicalName());
        objectStorage.persist(storageProvider);
        return storageProvider;
    }

    @Override
    public List<StorageProvider> getStorageProviders() {
        return objectStorage.load(StorageProvider.class);
    }

    @Override
    public StorageProvider getStorageProvider(URL url) {
        for (StorageProvider storageProvider : getStorageProviders()) {
            if (storageProvider.canHandle(url)) {
                return storageProvider;
            }
        }
        return null;
    }

    @Override
    public void clearAll() {
        objectStorage.removeAll(StorageProvider.class);
    }

    @Override
    public void updateStorageProvider(StorageProvider provider) {
        if (!objectStorage.exists(provider)) {
            throw new IllegalArgumentException("The given provider:" + provider + " is not yet added to the repository.");
        }
        objectStorage.persist(provider);
    }
}
